import sys
from PyQt5.QtWidgets import QMainWindow, QAction, qApp, QApplication
from PyQt5.QtGui import QIcon
 
 
class Example(QMainWindow):
     
    def __init__(self):
        super().__init__()
         
        self.initUI()
         
         
    def initUI(self):              
         
        exitAction = QAction(QIcon('exit24.png'), 'Exit', self)
        exitAction.setShortcut('Ctrl+Q')
        exitAction.triggered.connect(qApp.quit)
         
        self.toolbar = self.addToolBar('Exit')
        self.toolbar.addAction(exitAction)
         
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Toolbar')   
        self.show()
         
         
if __name__ == '__main__':
     
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
